What's is you think?

Ok ladies so I'm a day late. I've been feeling tired for three days, had an odd metal taste in my mouth last few days and lots of cranking and bloating. My period is now a day late. I did a test at the weekend and was a bfn. I woke this morning and on using the loo there was a very small amount of dark blood when I wiped. I so hope it's not my period coming. What do you think? Waiting to do a test until husband home from work x